package com.heima.behavior.service.impl;

import com.alibaba.fastjson.JSON;
import com.heima.behavior.service.ApBehaviorEntryService;
import com.heima.behavior.service.ApLikesBehaviorService;
import com.heima.common.article.HotArticleConstants;
import com.heima.common.exception.CustException;
import com.heima.model.behavior.dtos.LikesBehaviorDTO;
import com.heima.model.behavior.pojos.ApBehaviorEntry;
import com.heima.model.behavior.pojos.ApLikesBehavior;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.mess.app.NewBehaviorDTO;
import com.heima.model.threadlocal.AppThreadLocalUtils;
import com.heima.model.user.pojos.ApUser;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.Date;

@Service
@Slf4j
public class ApLikesBehaviorServiceImpl implements ApLikesBehaviorService {
    @Autowired
    MongoTemplate mongoTemplate;

    @Autowired
    ApBehaviorEntryService apBehaviorEntryService;

    @Autowired
    RabbitTemplate rabbitTemplate;


    @Override
    public ResponseResult like(LikesBehaviorDTO dto) {
        // 1. 校验参数
        //点赞需要登录
        ApUser user = AppThreadLocalUtils.getUser();
        if (user == null) {
            CustException.cust(AppHttpCodeEnum.NEED_LOGIN, "请先登录再点赞");
        }
        //TODO 校验文章id不能为空     使用注解校验
        if (dto.getArticleId() == null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST, "文章不存在，无法进行点赞");
        }
        //TODO 校验点赞方式 只能是0 或 1   使用注解校验
        Short operation = dto.getOperation();
        if (operation != 0 && operation != 1) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST, "不允许该操作");
        }
        // 2. 根据当前登录用户id查询行为实体对象
        ApBehaviorEntry apBehaviorEntry = apBehaviorEntryService.findByUserIdOrEquipmentId(user.getId(), dto.getEquipmentId());
        if (apBehaviorEntry == null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST, "行为实体对象不存在");
        }
        // 3. 如果是点赞操作  判断是否已经点过赞
        if (operation == 0) {
            ApLikesBehavior apLikesBehavior = mongoTemplate.findOne(Query.query(Criteria.where("entryId").is(apBehaviorEntry.getId()).and("articleId").is(dto.getArticleId())), ApLikesBehavior.class);
            //判断喜欢行为是否存在
            if (apLikesBehavior != null) {
                CustException.cust(AppHttpCodeEnum.DATA_EXIST, "已经点过赞");
            }
            // 4. 没有点过赞则 像mongo点赞集合中 添加点赞数据
            apLikesBehavior = new ApLikesBehavior();
            apLikesBehavior.setEntryId(apLikesBehavior.getId());
            apLikesBehavior.setArticleId(dto.getArticleId());
            apLikesBehavior.setCreatedTime(new Date());
            mongoTemplate.save(apLikesBehavior);
        }else {
            // 5. 如果是取消点赞操作  在mongo点赞集合中 删除对应点赞数据
            Query query = Query.query(Criteria.where("entryId").is(apBehaviorEntry.getId()).and("articleId").is(dto.getArticleId()));
            mongoTemplate.remove(query, ApLikesBehavior.class);
        }

        //发送点赞行为消息，用于修改文章行为汇总数量 更改文章热度
        NewBehaviorDTO mess = new NewBehaviorDTO();
        mess.setType(NewBehaviorDTO.BehaviorType.LIKES);
        mess.setArticleId(dto.getArticleId());
        mess.setAdd(dto.getOperation()==0?1:-1);
        rabbitTemplate.convertAndSend(HotArticleConstants.HOT_ARTICLE_SCORE_BEHAVIOR_QUEUE,
                JSON.toJSONString(mess)  //如果是json序列化，直接发对象
                                        //如果没有设置序列化，发送json字符串消息
        );
        log.info("点赞行为 发送消息 ==>{}",JSON.toJSONString(mess));
        return ResponseResult.okResult();
    }
}
